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Two new Earth-like exoplanets discovered


Posted on Wednesday, 19 June, 2019 | Comment icon 18 comments

The two new planets could potentially support life. Image Credit: NASA
The new worlds are so much like our own that both are now on a list of the 19 planets most likely to support life.
Situated a mere 12.5 light years away in orbit around a star in the constellation Aries, the planets - Teegarden b and Teegarden c, add to the growing list of potentially habitable extrasolar worlds.

"The two planets resemble the inner planets of our Solar System," said astrophysicist and lead study author Mathias Zechmeister. "They are only slightly heavier than Earth and are located in the so-called habitable zone, where water can be present in liquid form."

Incredibly, the star around which these planets orbit - despite its proximity - was only discovered in 2003 because its dim appearance, small size and low mass made it difficult to detect.
"The planets Teegarden's Star b and c are the first planets detected with the radial velocity method around such an ultra-cool dwarf," the researchers wrote.

"Both planets have a minimum mass close to one Earth mass, and given a rocky, partially iron, or water composition, they are expected to have Earth-like radii."

Determining exactly what type of atmosphere these planets have however is likely going to require the services of the James Webb Space Telescope which won't be launching for another two years.

Until then, we can only speculate as to whether or not life might exist there.

Source: Science Alert | Comments (18)

Tags: Extrasolar, Planet

Recent comments on this story
Comment icon #9 Posted by Stiff on 19 June, 2019, 18:09
It would be even better if your name was Tony Garden. Then you could call it 'T. Gardens' Tea Garden at Teegarden's'.
Comment icon #10 Posted by Orphalesion on 19 June, 2019, 18:10
Good point, but well, since this is my future now, I can just change my name.
Comment icon #11 Posted by Golden Duck on 19 June, 2019, 21:59
https://www.visitnsw.com/destinations/north-coast/forster-and-taree-area/tea-gardens
Comment icon #12 Posted by AllPossible on 19 June, 2019, 22:41
Crazy part is if/when we get to these planets they may not even be habitable. 12.5 light years is a few hundred of our years, maybe more. Awesome discovery but nobody in ours, kids, grandkids etc will ever get to experience. Even if everything worked out with the trip it's still a risk
Comment icon #13 Posted by alfa015 on 20 June, 2019, 0:16
Thanks for the links!
Comment icon #14 Posted by Imaginarynumber1 on 20 June, 2019, 5:28
We don't know that for certain. Someone in 1919 never would believe that in just 50 years we would land on the moon. Or much less a hundred years later cellphones, internet, self driving cars, etc. We don't know where technology will be.
Comment icon #15 Posted by alfa015 on 20 June, 2019, 11:33
Btw the paper of the discovery: https://www.aanda.org/component/article?access=doi&doi=10.1051/0004-6361/201935460
Comment icon #16 Posted by AllPossible on 20 June, 2019, 11:39
I completely agree unfortunately those discoveries are in the planet & work well on our planet. Travelling Trillions of miles in a hostile environment for generations just to reach a planet is very far away from what we have available. Don't get me wrong I love astronomy & the idea of us exploring space but we have just stumbled upon it. It will take 100s+ years for it to be a serious thing. Sending a rover to another planet in our solar system awesome. Sending humans out of our solar system is a whole new mindset
Comment icon #17 Posted by TripGun on 20 June, 2019, 16:45
So its only 18+ trillion miles, see you all there in four hundred and eleven thousand years
Comment icon #18 Posted by TonopahRick on 30 June, 2019, 22:43
Drop me a post card, I can't go.


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